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Sarawhite-COL.is a high affinity optical brightener with bluish tone for cellulosic fibres and their blends. Due to it's high affinity Sarawhite-COL.is recommended by exhaust application only.
| Key Features | Benefits |
|---|---|
| Bluish tone
|
Brilliant whites can be obtained
|
| Concentrated form
|
Economical
|
| High affinity
|
Excellent exhaustion
|
| Stability to pH
|
Stable to pH 7 to 10
|
| Physical appearance
|
Light to medium dark, greenish yellow powder
|
| Ionic nature | Anionic
|
| pH of 1% solution | 10 +/- 1
|
| Miscibility | Soluble in water
|
| Compatibility | Compatible with anionic and non-ionic products |
| Stability
|
Unstable to dilute acids but stable to dilute alkalies, hard water, hydrogen peroxide
|
Exhaust process: Cotton, viscose & modal
Suggested recipe for better whiteness
Note: OBA treatment to be given after bleaching in hot rinse
STABILITY & FASTNESS PROPERTIES
| Stability to :
|
Remarks
|
| Peroxide bleach
|
Stable
|
| Reduction bleach
|
Unstable
|
| (hydro sulphite based)
|
Unstable
|
| Chlorine bleach
|
|
| pH
|
5-12
|
| Fastness properties
|
Methods
|
Change in degree of whiteness
|
| Wash fastness, 60 deg.C
|
ISO 105-C06 C1
|
4-5
|
| Wash fastness, 90 deg.C
|
ISO 105-C06 E1
|
4
|
| Dry heat fixation, 180 deg.C
|
ISO 105-P01
|
4
|
| Dry heat fixation, 210 deg.C
|
ISO 105-P01
|
3
|
| Perspiration, acidic
|
ISO 105-E04
|
4-5
|
| Perspiration, alkaline
|
ISO 105-E04
|
4-5
|
Precautions
Storage : Store in cool, ventilated shed away from heat and direct sunlight.Storage temperature should not exceed 35 deg C.Close lids firmly to avoid contact with air and moisture.
Shelf Life : 9 months from the date of manufacturing, if stored under controlled conditions.
The above information is given in good faith and is without warranty
